Potter&#39;s scrapping device.



F. A. SEBRING 62 F. STROBL POTTERS SCRAPPING DEVICE. APPLICATION FILEDJAN. \a. mu.

1,260,074. Patented Mar. 19, 1918.

m l nuuum Swan whoa P nn POTTER/S SCRAPPING DEVICE.

Specification oi Letters Patent.

Patented Mar. 19, 1918.

Application filed January 18, 1917. Serial No. 143,049.

To all whom it may concern:

Be it known that we, FRANK A. SEBRING and FRANK STROBL, citizens of theUnited States, residing at Sebring, in the county of Mahoning and Stateof Ohio, have invented a new and useful Potters Scrapping Device, ofwhich the following is a specification.

Our invention relates to potters scrapping devices and has more especialrefer ence to a portable device provided with a cutting blade andarranged to be placed over the mouth of a mold for the purpose oftrimming the upper edge of the molded article.

, This device relates more especially to the fluid clay or slip process,such as is employed in molding dishes, plates and the like. It is ofcourse understood that molds of this character are left open upon theirupper side in order that the slip may be poured into the mold, fillingthe same, and as these molds, like all others used in pottery, arepreferably formed from plaster of Paris, they are very absorbent, hencethe water contained in the slip is drawn into the walls of the mold andthe clay thus re jected is deposited in an even coating over the entireinterior of the mold. Time allows this coating to accumulate and when ithas reached the proper thickness the remainder of the slip is poured outof the mold thus leaving the hollow molded article within the mold. Thethickness of the molded article is determined by the length of time inwhich the slip is allowed to remain in the mold before being pouredtherefrom.

After the operation above described has been completed it will of coursebe understood that the edge of the molded article will naturally be moreor less uneven and this edge is, in the old way, trimmed and smoothed byhand, the potter using a knife to trim off the scrap of the moldedarticle.

The object of this invention is to provide a portable scrapping devicewhich may be placed upon the open mouth of a mold to easily and readilytrim the uneven edge formed around the molded article.

A further object is to provide a device of this character which will beinexpensive to manufacture and durable and which may be easily andreadily moved from place to place when desired.

A still further object is to provide a scrapping device having anadjustable knife blade carried therein and arranged to simultaneouslytrim the entire edge of a dish or other molded article.

WVith these objects in view the invention consists in the novelconstruction and arrangement of parts, hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims, itbeing understood that various changes in theform, proportions, size and minor details of construction may be madeFig. 3 1s a fragmentary perspective view of a portion of the scrappingdevice show ing the means of attaching the adjustable knife bladethereto.

Similar numerals of reference indicate corresponding parts throughoutthe several figures of the drawing. Referring more especially to theconstruction illustrated in the accompanying drawing, the numeral 1indicates the mold used in the present process, said mold being shapedto cast a dish therein, the top side of the mold being open, ahorizontal shoulder 2 being formed around the upper edge of the moldingsurface of the mold. lhe mold shown in the drawings is provided with aplurality of sockets 3, the use of which will be hereinafter pointedout. 7

In molding pottery by this process the mold is poured full of slip to apoint just above the shoulder 2, after which the mold is allowed tostand for several minutes during which a portion of the water containedin the slip is drawn into the walls of the mold, the clay thus rejectedbeing deposited in an even coating over the interior of the mold. thatthe length of timein which the slip is allowed to stand in the molddetermines the thickness of the molded article. After the desired timehas elapsed the balance of the slip is poured from the mold, leaving thehollow plate within the mold. It has been the usual custom to trim theedge of the molded article by means of a knife blade which is passedaround the top of the mold It will, of course, be understood trimmingoff the scrap and finishing the edge of the dish or other moldedarticle.

In the presentinvention a trimming device is provided which may beeasilyandqnickly placed upon the open top of the mold, after the articlehas been molded as above described, to easily and quickly trim the edgeof the dish or other article,

The trimming device comprises the frame in formed of suitable metal,preferably aluminum, --provided with a plurality of proj ections 5arranged to, registenwith :the

:mQtall-inedsockets/3, which are formed in the upper edge of the: mold,saidffra-me, being-presi ed withtlle, cutaway portions; 6

forming grips 0rhandles bymeans of which $116 :fi-rame be carried from,place to ,yplace: and placedupon the mold. The inner edge 7 ofthefraineconforms to the shape of the edge; of the: dish or other molded artideds; d wnwardly depending flange 8 .Is provided around: said inner edge:of the frame. Theknife blade 9' comprises a'thin Bee the mol p e entingrough, or

ragged (ii-uneven appearance. The trim- I :millgrdevice isthen placedupon themold,

then flanges .8 of i :dev ce-s iding against the inner wallglfiof the,mold, the cutting edgello of the knife blade passing through thfiqPhStilay "at the PP e 0f the @moldingeurface of the-mold, thus; trimmingthe-scrap iromi thezmolded articleand finishing lalldi smoothie-g. thedge of the article.

ner. duces amore finished andieven edge upon framed is necessarytoxc-ause'the blade to .sever the thickness of '7 clay trimmingthescrap: from the molded article in one rapid ope-ration.fll'ieitrimmingdevice istthe-ni litt- 660 ed from the mold and the.molded articte re-.

moved-from themold-i to; be; dried and; afterward finished and burned inthe usual 'man- This trimming .device "not only pro- I the. moldedarticle but may be "operated-to trim 'or-scraptthecware mnch more-easilyand quickly than: witlrthe old methodthus saving time andglabon Weclaim: 7:0 1. (A scrapping device. for pottcsyfijnolds comprising ahollowframe provided with a downwardly disposed fiange around its inneredge and a knife blade 'adjfustabl y mounted upon said :fi-ange;andarrang-ed to 7:5-

trim theve'dge; of the moldedartible when said fraine;:1.s;placeduponthemold.

:2; In combination with-an ojpen mold for "castinghollow pottery aware,and provided 7 with mtu-rned-shoulder near "its open side, ascrapp ngdevice compris nga hollow fr me providedwith a; do n ly disposed flangearound its in'nenedge and-a .k'nife blade adjusmably mounted; upon-said.ii-ange and arranged to contact with said -35 ShOuldQr to trim, theedge of the fmolded tartipile; whemthe frame; is placed upon the 3111}testimony thatwe claim the; above, we

have hereunto; subscribed our, names.

, FRANK. SEBRlNLG.

EBANLK SIM-B01314,

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